text: /*************************************************************************/
  /*  cpu_particles_editor_plugin.cpp                                      */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #include "cpu_particles_editor_plugin.h"
  
  #include "editor/plugins/spatial_editor_plugin.h"
  
  void CPUParticlesEditor::_node_removed(Node *p_node) {
  
  	if (p_node == node) {
  		node = NULL;
  		hide();
  	}
  }
  
  void CPUParticlesEditor::_notification(int p_notification) {
  
  	if (p_notification == NOTIFICATION_ENTER_TREE) {
  		options->set_icon(options->get_popup()->get_icon("CPUParticles", "EditorIcons"));
  	}
  }
  
  void CPUParticlesEditor::_menu_option(int p_option) {
  
  	switch (p_option) {
  
  		case MENU_OPTION_CREATE_EMISSION_VOLUME_FROM_MESH: {
  
  			emission_file_dialog->popup_centered_ratio();
  
  		} break;
  
  		case MENU_OPTION_CREATE_EMISSION_VOLUME_FROM_NODE: {
  
  			emission_tree_dialog->popup_centered_ratio();
  
  		} break;
  
  		case MENU_OPTION_RESTART: {
  
  			node->restart();
  
  		} break;
  	}
  }
  
  void CPUParticlesEditor::edit(CPUParticles *p_particles) {
  
  	base_node = p_particles;
  	node = p_particles;
  }
  
  void CPUParticlesEditor::_generate_emission_points() {
  
  	/// hacer codigo aca
  	Vector<Vector3> points;
  	Vector<Vector3> normals;
  
  	if (!_generate(points, normals)) {
  		return;
  	}
  
  	if (normals.size() == 0) {
  		node->set_emission_shape(CPUParticles::EMISSION_SHAPE_POINTS);
  		node->set_emission_points(points);
  	} else {
  		node->set_emission_shape(CPUParticles::EMISSION_SHAPE_DIRECTED_POINTS);
  		node->set_emission_points(points);
  		node->set_emission_normals(normals);
  	}
  }
  
  void CPUParticlesEditor::_bind_methods() {
  
  	ClassDB::bind_method("_menu_option", &CPUParticlesEditor::_menu_option);
  }
  
  CPUParticlesEditor::CPUParticlesEditor() {
  
  	particles_editor_hb = memnew(HBoxContainer);
  	SpatialEditor::get_singleton()->add_control_to_menu_panel(particles_editor_hb);
  	options = memnew(MenuButton);
  	options->set_switch_on_hover(true);
  	particles_editor_hb->add_child(options);
  	particles_editor_hb->hide();
  
  	options->set_text(TTR("CPUParticles"));
  	options->get_popup()->add_item(TTR("Create Emission Points From Mesh"), MENU_OPTION_CREATE_EMISSION_VOLUME_FROM_MESH);
  	options->get_popup()->add_item(TTR("Create Emission Points From Node"), MENU_OPTION_CREATE_EMISSION_VOLUME_FROM_NODE);
  	options->get_popup()->add_separator();
  	options->get_popup()->add_item(TTR("Restart"), MENU_OPTION_RESTART);
  	options->get_popup()->connect("id_pressed", this, "_menu_option");
  }
  
  void CPUParticlesEditorPlugin::edit(Object *p_object) {
  
  	particles_editor->edit(Object::cast_to<CPUParticles>(p_object));
  }
  
  bool CPUParticlesEditorPlugin::handles(Object *p_object) const {
  
  	return p_object->is_class("CPUParticles");
  }
  
  void CPUParticlesEditorPlugin::make_visible(bool p_visible) {
  
  	if (p_visible) {
  		particles_editor->show();
  		particles_editor->particles_editor_hb->show();
  	} else {
  		particles_editor->particles_editor_hb->hide();
  		particles_editor->hide();
  		particles_editor->edit(NULL);
  	}
  }
  
  CPUParticlesEditorPlugin::CPUParticlesEditorPlugin(EditorNode *p_node) {
  
  	editor = p_node;
  	particles_editor = memnew(CPUParticlesEditor);
  	editor->get_viewport()->add_child(particles_editor);
  
  	particles_editor->hide();
  }
  
  CPUParticlesEditorPlugin::~CPUParticlesEditorPlugin() {
  }
  